Sinaia, Romania

With a population of just 9,071, Sinaia is a quaint mountain town, but don't be fooled - the bureaucracy is a persistent headache. While the Peleș Castle and Sinaia Monastery draw tourists, the harsh winters and heavy snowfall are a challenge. Camping and tree-felling are strictly regulated, and violators face severe punishment. Ultimately, Sinaia is best suited for outdoor enthusiasts undeterred by the region's environmental restrictions and unpredictable climate.